Abyssoanthus Reimer & Fujiwara in Reimer, Sinniger, Fujiwara, Hirano & Maruyama, 2007 (additional source)
Acrozoanthus australiae Saville-Kent, 1893 (additional source)
Antipathes galapagensis Deichmann, 1941 (additional source)
Antipathes grandiflora Silberfeld, 1909 (additional source)
Antipathes hypnoides (Brook, 1889) (additional source)
Antipathozoanthus Sinniger, Reimer & Pawlowski, 2010 (original description)
Antipathozoanthus macaronesicus (Ocana & Brito, 2003) (additional source)
Corallizoanthus Reimer in Reimer Nonaka Sinniger & Iwase, 2008 (additional source)
Corallizoanthus tsukaharai Reimer in Reimer Nonaka Sinniger & Iwase, 2008 (additional source)
Epizoanthus Gray, 1867 (additional source)
Epizoanthus arenaceus (Delle Chiaje, 1841) (additional source)
Epizoanthus cnidosus Tischbierek, 1929 accepted as Hydrozoanthus gracilis (Lwowsky, 1913) (new combination reference)
Epizoanthus fatuus (Schultze, 1860) (additional source)
Epizoanthus illoricatus Tischbierek, 1930 (additional source)
Epizoanthus paguricola Roule, 1900 (additional source)
Epizoanthus planus Carlgren, 1923 (additional source)
Hydrozoanthidae Sinniger, Reimer & Pawlowski, 2010 (original description)
Hydrozoanthus Sinniger, Reimer & Pawlowski, 2010 (original description)
Hydrozoanthus antumbrosus (Swain, 2009) (additional source)
Hydrozoanthus gracilis (Lwowsky, 1913) (additional source)
Hydrozoanthus tunicans (Duerden, 1900) (additional source)
Isaurus Gray, 1828 (additional source)
Isozoanthus Carlgren in Chun, 1903 (additional source)
Isozoanthus africanus Carlgren, 1923 (additional source)
Isozoanthus antumbrosus Swain, 2009 represented as Hydrozoanthus antumbrosus (Swain, 2009) (new combination reference)
Isozoanthus arborescens Danielssen, 1890 (additional source)
Isozoanthus arenosus Carlgren, 1923 (additional source)
Isozoanthus sulcatus (Gosse, 1860) (additional source)
Isozoanthus valdivae Carlgren, 1923 (additional source)
Mesozoanthus fossii Sinniger & Haussermann, 2009 (additional source)
Neozoanthus Herberts, 1972 (additional source)
Paleozoanthus Carlgren, 1924 (additional source)
Palythoa Lamouroux, 1816 (additional source)
Palythoa heliodiscus (Ryland & Lancaster, 2003) (additional source)
Palythoa mutuki (Haddon & Shackleton, 1891) (additional source)
Palythoa psammophilia Walsh & Bowers, 1971 (additional source)
Palythoa tuberculosa (Esper, 1805) (additional source)
Parazoanthidae Delage & Hérouard, 1901 (additional source)
Parazoanthus anguicomus (Norman, 1869) (additional source)
Parazoanthus axinellae (Schmidt, 1862) (additional source)
Parazoanthus dichroicus Haddon A.C. & Shackleton A.M., 1891 (additional source)
Parazoanthus douglasi Haddon & Shackleton, 1891 (additional source)
Parazoanthus elongatus McMurrich, 1904 (additional source)
Parazoanthus parasiticus (Duchassaing de Fonbressin & Michelotti, 1860) accepted as Umimayanthus parasiticus (Duchassaing de Fonbressin & Michelotti, 1860) (additional source)
Parazoanthus puertoricense West, 1979 accepted as Bergia puertoricense (West, 1979) (additional source)
Parazoanthus swiftii (Duchassaing de Fonbressin & Michelotti, 1860) (additional source)
Savalia Nardo, 1844 (additional source)
Savalia lucifica (Cutress C.E. & Pequegnat W.E., 1960) (additional source)
Savalia savaglia (Bertoloni, 1819) (additional source)
Sphenopus Steenstrup, 1856 (additional source)
Zoanthus Lamarck, 1801 (additional source)

Indo-Pacific for Hydrozoanthus gracilis (Lwowsky, 1913) 
New Caledonia for Hydrozoanthus gracilis (Lwowsky, 1913) 

 Taxonomic remark

 for Parazoanthus douglasi Haddon & Shackleton, 1891

Likely belonging to the genus Hydrozoanthus. [details]